is "loading from bitarray" supported? about bloomfilters HOT 7 CLOSED

The simplest thing to do is use JSON.serialize(). See the unit tests for an example (https://github.com/dsummersl/bloomfilters/blob/master/test/spec/bloomfilterspec.coffee#L130).

I've discussed in the past adding more examples of bson/messagepack/JSON.serialize examples. That kind of thing of interest?

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sorry I did not make my use case clear enough: the server side bloom filter code is python. The python bloom filter will provide the bit array as a super long string that looks like '010010010010000001...'.

I would like to "populate" the client side BloomFilter with '010010010010000001...'.

Is this possible?

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Ah...I see. It sounds like your python implementation is not a sliced bloom filter, just a plain vanilla bloom filter? That in itself isn't much of a problem in that you could setup a SlicedBloomFilter with the # of slices equal to 1.

The main problem here really is the hashing function. The HashGenerator used in this library is built to minimize the number of sha1 calls for performance reasons, and its not pluggable. You will need to match the hashing implementation in python.

We could definitely make the hash generator pluggable - you could then make your own hashing function to match the behavior of your python library.

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very good points. thanks.

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If you figure out your path lemme know if I can do anything - happy to make the requisite change or accept PRs.

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after a bit of experimentation I abandoned the idea of populating the bloomfilter using python and passing the bitarray to the browser - there would be too much work required to add parity between existing python bloom filters and javascript implementations.

Instead I will make a javascript microservice that uses the same blooom filter implementation as the browser, and the values will be passed from python (django) code to the javascript service using a queue. This will simplify things a lot :)

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Quite! Glad you figured it out and thanks for the update.

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